(1) pre assembledThe pre assembly of the sleeve type pipe joint is the most important step, which directly affects the reliability of the seal. Special pre assemblies are usually required. The small diameter can be pre joint in a vise. The concrete method is to use a joint body as the mother's body and press the nut and the sleeve tightly onto the pipe. The utility model mainly comprises a sleeve type through pipe joint, a clamping sleeve type end through connection head, a clamping sleeve type three way pipe joint and other patterns. The author found that even if the same batch of goods of the same manufacturer, the tapered holes on these joints are often different in depth, resulting in leakage, and this problem is often overlooked.The correct approach should be to connect the end of the pipe with what kind of joint body, and the corresponding connection end with the same type of joint pre installed, so as to maximize leakage problems can be avoided.

Q:Principle of fast pipe joint

The utility model mainly comprises a sleeve type straight through pipe joint and a flaring pipe joint,The choice depends on whether you have a copper tube or a steel tube,Standard part code Y80-1 beginsWant to know the specific sealing and disassembly, you can look at the pictures in Baidu, you should see after you should understand

Q:What are the connecting forms of industrial pipe joints? Like buckling type connection,

The quick joint is a pipe joint which needs no tools and can be quickly disassembled and assembled. It has the advantages of compact structure, small size, light weight, high pressure resistance and interchangeability

Q:PE pipe joint and PPR joint can be with each other

I can'tPE is polyethylene, and PPR is random copolymerized polypropylene

Q:What is the difference between the PVC joint and the PVC pipe joint?

Difference：1, PVC connector is PVC material connector, this can only be PVC material;2 、 PVC pipe joint is the joint of PVC pipe fittings, PVC pipe fittings can choose different material joints according to different purposes.There is no need for comparison between the two.

Q:What joints do nylon hard tubes work on?

(I) flared type pipe jointApplication: oil, water, gas and other non corrosive or corrosive medium pipe joint with steel pipe specifications and flexible pipe welding, has the characteristics of reliable connection, good sealing performance, so it is widely used in oil refining, chemical industry, light industry, textile, metallurgy, national defense, aviation, ship etc.; also suitable for hydraulic transmission of various mechanical engineering, machine tools and other equipment pipeline. Flared tube fittings are manufactured in the following six categories:

Because the pipe joints belong to the connecting element dismounting, which in addition to meet the normal stable connection, good sealing performance, reasonable size, small pressure loss, good process performance and so on requirements, must also meet the requirements of convenient disassembly. Therefore, do not belittle those small pipe joints, because only its existence can support the whole hydraulic system.

Q:Hydraulic pipe quick coupling principle of hydraulic pipe joint

JB/T6381 ~ 6385-1992 burking hose connector has the advantages of convenient installation, but added a tightening process. After the hose is damaged, the joint coat can not be reused, and it is made up of a steel wire braided hose. The utility model can be connected with a welding pipe joint sealed with a O ring. Pipeline system suitable for oil, water and gas as medium. Medium temperature: Oil: -30 ~ 80 degrees Celsius; air, -30 ~ 50 degrees Celsius; water, 80 degrees below JB/ZQ4427 ~ 4428-1986, three valve type hose joint assembly, do not need to remove the rubber tube of the outer layer. A slightly different diameter of hose hose, hose on the joint coat of pre compression to compensate. Hose pre compression in 31% ~ 50% range to ensure no leakage under the pressure of work, will not pull glue, cover does not break. With the welded pipe joint, quick joint, sleeve type pipe joint used for oil, water and gas pipeline system for medium, working pressure, medium temperature by connecting hose limited JB/ZQ4429 ~ 4431-1986 quick change connector (both open and closed) tube apart and self sealing pipe. In the liquid will not be lost, so it is suitable for frequent disassembly occasions. The structure is complex, and the local resistance loss is greater. Suitable for oil and gas pipeline system for medium, the working pressure is lower than 31.5MPa, the medium temperature of -20 to 80 DEG JB/ZQ4434-1986 quick change connector (both ends open) for oil and gas pipeline system for medium, the working pressure of medium temperature according to connecting hose limited JB/ZQ4435-1986

Q:What is the nominal diameter of the phi 1/2 in the pipe joint?

One foot (25.4mm) is divided into eight parts, 1/4, that is, 2/8 is two in charge, 1/8 is 1 in charge, 3/8 is 3 in charge, 1/2 is 4 in charge, in order to calculate nominal diameter

Q:Hydraulic hose connector size 20As shown in Figure six, the angle is 71mm to the edge, 80mm to the diagonal, approximately 34mm higher

Two. Metric general threads1. metric screw thread with a capital M, tooth type angle 2 degrees =60 (alpha tooth type half angle);2. metric ordinary thread by pitch, coarse teeth, ordinary thread and fine teeth, two kinds of ordinary thread;2.1. coarse tooth ordinary thread mark generally does not indicate the pitch, such as M20 means coarse thread; fine tooth thread mark must indicate the pitch, such as M30 * 1.5 for fine tooth thread, in which pitch is 1.5.2.2. common thread is used for the connection and fastening between the mechanical parts, and the general thread connection is mainly made of coarse thread. The thread strength of the fine tooth thread is slightly higher than that of the same nominal diameter, and the self-locking performance is better.Mark 3. metric screw thread: M20-6H, M20 * 1.5LH-6g-40, where M represents a common thread metric, 20 nominal diameter thread is 20mm, 1.5 pitch, LH said, 6G 6H left, said thread precision grade, precision grade of internal thread uppercase, lowercase precision grade of said external thread, 40 screwing length.

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